Audi A4 B7 Heater Core Flush

How to flush a heater core safely with a garden hose duration.

Audi a4 b7 heater core flush.

How to replace the rear coolant flange and heater hoses on a 2004 2008 audi a4 b7 2 0t. Flush the heater core on an a4. Keep flushing until the water coming out is clear. It is way too expensive to replace the heater core in this car.

Turn on the water flow not too hard as the heater core is a bitch to replace and watch the gunk come out. Now is probably a good time to drain flush and bleed your whole cooling system. 2007 b7 audi a4 2 0l alt cooling system service including coolant flush. So if you want the short story when flushing the heater core you need two bottles of clr let one bottle sit overnight in the core flush it both ways 10 12 times more clr for a few hours flush 10 12 more times and the big piece of info let it sit at idle to bleed for a very long time until coolant is spouting out the bleed hole about an inch high at idle.

Cleaning heater core and bleeding 98 audi a4 b5 aeb 1 8t. My 2001 audi a4 had no heat due to a plugged heater core.